Poland: Did you mean...?

The Paris Peace Conference, held from January 1919 to January 1920 and attended by the victorious Allied powers, debated and agreed the terms of the peace settlement that formally ended the First World War (1914-18). As four empires were...

The Treaty of Brest-Litovsk, signed on 3 March 1918, outlined the harsh conditions under which the crumbling Russian Empire withdrew from the First World War (1914-18). Negotiated by Vladimir Lenin (1870-1924), the leader of Soviet Russia...

Ogedei Khan (aka Ogodei) ruled the Mongol Empire from 1229 to 1241. He was the third son of Genghis Khan (r. 1206-1227), the empire's founder. Ogedei's accomplishments included creating a new capital at Karakorum, establishing a system of...

The Hundred Days refers to the second reign of French Emperor Napoleon I, who unexpectedly returned from exile to reclaim the French throne. It encompasses Napoleon's triumphant return to Paris on 20 March 1815, his climactic defeat at the...

Reinhard Heydrich (1904-1942) was a lieutenant-general in the Nazi SS organisation, Gestapo chief, and head of Reich security. A favourite of Adolf Hitler (1889-1945), Heydrich controlled all police activity in the Third Reich and was instrumental...

Einsatzgruppen ('deployment groups') were secret Nazi killing units, who systematically sought out and murdered civilians identified as enemies of the Third Reich. Operating without any legal restrictions in territories newly conquered by...

The Junkers Ju 87 'Stuka' was a two-seater dive-bomber plane used by the German Air Force (Luftwaffe) in various theatres of the Second World War (1939-45). The Stuka, with its distinctive angled wings, excelled when combined with armoured...

Johannes Hevelius (1611-1687) was a Polish astronomer based in Danzig (Gdańsk). He worked from his own privately funded observatory, creating maps of the Moon's surface, discovering the first variable star, and spotting several new comets...

This video shows the borders and populations of each country in Europe, for every year since 400 BC. Vassal states and colonies are not included in the count of a country's population. Sources : 1. Population : - Angus Maddison...

Adolf Hitler (1889-1945), the leader of Nazi Germany, was intent on attacking the USSR in the summer of 1941. With Western Europe subdued in 1940, Hitler could finally pursue his dream of territorial expansion in the East, destroy Bolshevism...